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PI36010: CHANNEL FRAMEWORK NCSA ACCESS LOG SERVICE TIME

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You can track all active APARs for this component.

APAR status

  • Closed as new function.

Error description

  • There is no NCSA directive that returns the elapsed time from
    receiving the request to sending the first set of bytes of the
    response.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server full       *
    *                  profile Versions 8.0, 8.5.5 and Liberty     *
    *                  Profile users of the National Center for    *
    *                  Supercomputing Applications (NCSA) Access   *
    *                  Log                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: NCSA log does not have a directive to   *
    *                      return the elapsed time from            *
    *                      receiving a request to sending          *
    *                      first bytes of the response.            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Without diagnostic tracing, it is difficult to isolate whether
    the delay is being caused by a customer network/client issue or
    during the handling the request by the server, since the %D
    directive is the elapsed time of the entire request and
    response
    exchange.
    

Problem conclusion

  • The HTTP Channel NCSA access log was modified to include a
    directive  that represents the service time of the request,
    from the moment the request is received until the first set of
    bytes of the response are sent - millisecond accuracy,
    microsecond precision.
    
    To include the request service time in the NCSA access data
    log, set the HTTP Channel custom property 'accessLogFormat'
    with the value of %{R}W.
    
    Information on how to set HTTP Channel custom properties can
    be found here:
    
    http://www-01.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.i
    bm.websphere.nd.multiplatform.doc/ae/rrun_chain_httpcustom.html?
    cp=SSAW57_8.5.5%2F3-19-6-413&lang=en
    
    The fix for this APAR is currently targeted for inclusion in
    fix packs 8.0.0.11 and 8.5.5.6.  Please refer to the
    Recommended Updates page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI36010

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-03-02

  • Closed date

    2015-04-01

  • Last modified date

    2015-04-01

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R800 PSY

       UP

  • R850 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 850

Reference #: PI36010

Modified date: 01 April 2015